#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int year;
	int runnian = 0;
	for (year = 1000; year <= 2000; year++)
	{
		if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
			printf("%d\n", year);
	}
	return 0;
}